closed-circuit signaling
closed-circuit signaling
[¦klōzd ¦sər·kət ′sig·nə·liŋ] (communications)
Signaling in which current flows in the idle condition, and a signal is initiated by increasing or decreasing the current.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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